CN1666796A

CN1666796A - Bat for ball games and manufacturing method thereof

Info

Publication number: CN1666796A
Application number: CNA2005100056154A
Authority: CN
Inventors: 约翰尼斯·毛瑟; 克劳斯·兰巴赫; 曼弗雷德·恩贝格尔; 约翰·科策; 赫弗雷德·拉默
Original assignee: Head Sport GmbH
Current assignee: Head Sport GmbH
Priority date: 2004-01-23
Filing date: 2005-01-21
Publication date: 2005-09-14
Anticipated expiration: 2025-01-21
Also published as: EP1557203A2; US7044869B2; TW200524658A; EP1557203B1; ATE448007T1; TWI343268B; DE502004010345D1; CN100518864C; US20050164813A1; EP1557203A3; DE102004003528B3

Abstract

The present invention relates to an improved racket for ball games, in particular a tennis racket, squash racket, badminton racket, racquet ball racket or paddle tennis racket, comprising a frame consisting of a racket head and a handle portion connected thereto and being formed of a frame profile, wherein the racket head defines a stringing plane. The frame profile comprises at least one opening extending through the frame profile essentially perpendicular with respect to the stringing plane of the racket. Preferably, at least two openings of this kind are provided essentially symmetrical with respect to the longitudinal axis of the racket at about two o'clock to four o'clock and/or eight o'clock to ten o'clock on the racket head. Particularly preferably, the openings are at about three o'clock and/or nine o'clock. The racket of the present invention thus exhibits particularly advantageous ball control characteristics.

Description

The racket and the manufacture method thereof that are used for ball game

Technical field

The present invention relates to a kind of racket that is used for ball game, particularly tennis racket, wall ball racket, Badminton racket, pelota and clap or the cricket bat, and relate to a kind of method that is used to make this racket with splendid control.

Background technology

This racket has the framework that forms racket head and handgrip that is connected with this racket head or handle part usually.Transitional region between this racket head and this handle part is formed with a so-called heart type zone usually.This framework is normally formed by a frame profiles or hollow profile, and this frame profiles or hollow profile often are to be made in a moulding press by the carbon fiber reinforced plastic material.The racket head of this racket limits a stringing plane, and the netting twine of this racket is arranged in the stringing plane.In order to hold each bar line of this netting twine, be provided with the through hole that can supply each line to pass on the framework in this stringing plane.

US-A-3,917,267 disclose and a kind ofly have been roughly foursquare racket head and by the formed tennis racket of framework of its shank of stretching of hanging down by having.This racket makes when stringing across each line length of this racket head and extends forming a batting surface perpendicular to the side component of this foursquare racket head, and all lines have identical length and identical tension force on this batting surface.In order to reduce weight and to twine resistance, the corner regions of this racket head can be provided with perforate in this framework.

DE-A-39 10 890 has described a kind of racket with framework major part, and this framework major part comprises head, neck and shank.Space between two of this framework major part relative shanks is got over by a neck spanning, and this neck bridge seals a stringing surface with this head.This neck bridge comprise roughly with respect to the longitudinal axis horizontal expansion of this racket and on this racket is spaced-apart on vertically bridge portion and following bridge portion so that on this slotted eye of formation between bridge portion and the following bridge portion.A damping body that is made of the weakening material then is arranged between two bridge members.

FR-A-821 471 and US-A-3,647,211 disclose a kind of racket that comprises racket head and be connected and have the handle portion of a plurality of apertures with this racket head.

Summary of the invention

The purpose of this invention is to provide a kind of improvement its property controlled, the particularly racket of the aforementioned type of ball-handling property, wherein this racket can have the structure of light weight simultaneously.This purpose is reached with a kind of racket of the feature of independent claims 1 that comprises.Dependent claims has illustrated the preferred embodiment of racket of the present invention.Independent claims 16 relate to a kind of method that is used to make this racket.Its dependent claims relates to the preferred embodiment of method of the present invention.

Ball game racket of the present invention comprises a framework, and this framework is formed by a frame profiles or hollow profile and has a racket head and preferably via a heart-shaped regional handle part that is connected with this racket head.This racket head limits a stringing plane.This frame profiles comprises and at least onely passes this frame profiles and be approximately perpendicular to this stringing plane and the perforate of extending.In other words, the perforate in the frame profiles of racket of the present invention is approximately perpendicular to a plurality of through holes extends, and these through holes are arranged in this frame profiles usually and can pass through for line.This perforate can be arranged to make it between the two adjacent through holes of using for these lines.But this perforate also can preferably be arranged in the zone of a through hole of using for line, therefore can, for example, utilize the eyelet (cringle) of this line and/or this line to fix a lid of using for this opening.

The shape of this racket head has very big arbitrariness, and can be ellipse, egg type, water droplet shape or the rectangle with circular edge.For the periphery along this racket head defines the position of these perforates, typically use the clock dial of a clock, wherein the position of the twelve-hour distal-most end or the free end that are positioned at this racket head (sees also Fig. 1 a).Therefore, three position and nine o ' clock positions approximately are positioned at the middle place of the total length of this racket head.

Preferably, the longitudinal axis that these perforates roughly are symmetrical in this racket is provided with in couples, and the longitudinal axis that promptly can be symmetrical in this racket is provided with two, four or more a plurality of perforate.Preferably, this at least one perforate be arranged between two and four and/or eight and ten o'clock place between the zone in.Particularly preferably, these perforates are arranged in pairs in this zone.More preferably, at least one pair of perforate is arranged on about three and/or the nine o'clock place of this racket head.In addition, a plurality of perforates can be set on each side, for example, a plurality of holes can be arranged in the position at about three and/or nine o'clock symmetrically, or since three and/or nine o'clock towards this handle part, perhaps arrange symmetrically towards the free end of this racket head since three and/or nine o'clock.

According to the present invention, extend fully through frame profiles with respect to the vertically disposed perforate in stringing plane, if an i.e. hollow profile, then one first hole is arranged on one first racket side and aligns with it, one second hole is arranged on the second relative racket side place, and wherein, two holes form this perforate together.

This perforate preferably is formed in this framework after this racket is mold formed in moulding press, and still, it also can form by a core is put into mould in this molding process.If this perforate is to form after this molded program, then this preferably reaches by boring, milling or sawing.

If this perforate forms by boring, then its cross section is normally cylindrical, but its also any other shape.Preferably, a round hole has a diameter between 2mm and 8mm, more preferably between 3mm and 6mm.If this perforate forms by milling or sawing, then two relative holes formation independently of each other usually in this frame profiles, wherein, when when the direction that is parallel to this stringing plane is seen, each hole is roughly arc or flute profile.But this hole can also have any other shape.Each hole along the length of this framework preferably between 1mm and 10mm, more preferably between 3mm and 7mm.The degree of depth in each hole is at least corresponding to the wall thickness of this frame profiles.

The width in these holes, promptly they on the through hole direction of using for these lines or with respect to this framework in the corresponding position perpendicular to the size of this framework preferably between 3mm and 7mm.The size in this hole, particularly its width and the degree of depth should be selected to and this Kong Buhui arrived be arranged on the groove that is used to hold a headband in this framework.

In order to prevent that dirt and/or aqueous vapor from entering this frame profiles, this perforate preferably is provided with an insert that is roughly tubulose, so that towards this frame profiles of enclose inside.This tubulose insert is normally made by an elastomeric material (as rubber), makes that the influence that is subjected to because of the effect that provides this perforate to cause is as much as possible little.In addition, can also be uncapped by the branch that an elastomeric material is made and hide the hole that forms this perforate, it can reach identical effect.

In addition, can be preferably by providing enhancement Layer or strengthening layer to strengthen around the frame profiles in the zone of this at least one perforate.For reaching this purpose, particularly advantageous is each with respect to the strengthening layer of vertically arranging braided material (i.e. spirality in the wall of this frame profiles), that made by carbon fiber, glass or aromatic polyamides and/or unidirectional preimpregnation thing with ± 45 of this frame profiles.

The special result of these perforates of extending perpendicular to the stringing plane is when impacting, this racket has quite firm character when ball hits this racket, therefore in splendid mode ball is quickened, and after this ball had left this racket, this racket had the character of suitable softness or buffering.By in the zone of this perforate, and preferably on both sides, make this frame profiles have the slotted recess that its degree of depth is parallel to this perforate extension, can further improve effect of the present invention.

Another advantage of racket of the present invention be the vibration that in this racket, produces because of ball contact racket with in known racket, compare little much reaching on this handle, this will can produce preferred ball-handling and can make racket that preferable effectiveness in vibration suppression is arranged when match, thereby reduce or eliminate as appearances such as tennis elbows.

Description of drawings

Below, racket of the present invention will be according to preferred embodiment and is illustrated by way of example with reference to the accompanying drawings, wherein:

Fig. 1 a illustrates the schematic front view of first embodiment of racket of the present invention;

Fig. 1 b illustrates the schematic front view of second embodiment of racket of the present invention;

Fig. 2 a illustrates the amplification stereogram in a zone of framework of the racket of the present invention of Fig. 1 a, and this zone comprises a cylindrical aperture and a slotted recess;

Fig. 2 b illustrates the amplification stereogram in a zone of framework of the racket of the present invention of Fig. 1 b, and this zone comprises a perforate that is formed by two independently relative holes, and wherein, a wherein hole in these holes can be seen;

Fig. 2 c illustrates the amplification stereogram that is similar to zone Fig. 2 b, this framework, and wherein the hole among the embodiment shown in this boring ratio Fig. 2 b is shorter;

Fig. 2 d illustrates the three-dimensional local figure in zone of framework of the another embodiment of racket of the present invention;

Fig. 3 a illustrates the schematic cross section of frame profiles of the framework of the present invention of the embodiment shown in Fig. 2 a, but does not have a slotted recess;

Fig. 3 b illustrates the schematic cross section that is similar to frame profiles Fig. 3 a, framework of the present invention, but does not have a tubulose insert; And

Fig. 3 c illustrates the schematic cross section of frame profiles of the framework of the present invention of the embodiment shown in Fig. 2 d.

The specific embodiment

In order to be more readily understood, the schematic diagram of the racket of the present invention 2 shown in Fig. 1 a comprises the clock dial of a common clock, and wherein twelve-hour position (XII) is positioned at the free end farthest of this racket.

Racket of the present invention comprises that one forms the framework 4 that a racket head 6 reaches a handle part 10 that is connected with this racket head 6, and this racket head 6 preferably is connected via a heart-shaped zone 8 with this handle part 10.This framework 4 is formed by a frame profiles or hollow profile (with reference to Fig. 2 d and Fig. 3 a-3c).This racket head limits a stringing plane of this racket.In order to hold this netting twine, in the zone of this racket head 6, this framework 4 comprises that a plurality of each line 7 that mainly is arranged in this stringing plane and confession netting twine pass through hole (not shown) wherein.Wherein one of these netting twines schematically is shown in the cross-sectional view of Fig. 3 a.

According to the embodiment shown in Fig. 1 a, this frame profiles comprises a perforate 12, and this perforate 12 is at three and/or nine o'clock place and the through hole that extends through this frame profiles and be approximately perpendicular to this stringing plane and/or use for the line of this netting twine.Shown in Fig. 2 a, this perforate is configured as one and is roughly columniform through hole.This hole extends through two relative walls of this frame profiles, thereby forms a perforate 12 that extends through this frame profiles.This round hole 12 preferably has between about 2mm and 8mm, more preferably the diameter D between 3mm and 6mm.

Enter frame profiles inside for fear of dirt and/or aqueous vapor, this perforate 12 preferably is provided with one can be towards the insert 14 of this frame profiles of enclose inside of this perforate.This insert 14 is preferably tubulose, promptly has a through hole 16.But it also can be configured to one " lid " or a solid outline.This insert 14 is normally made by a soft material or elastomeric material, so that it can not have a strong impact on the performance of the racket in this zone.Preferably, can use a transparent plastic material (as rubber).This tubulose insert 14 is preferably as about 0.5mm to 1.5mm thick, more preferably the thick thin-walled of 0.5mm to 1mm.Fig. 3 b illustrates the cross-sectional view that does not have the racket of an insert of the present invention.

Shown in Fig. 2 a, racket of the present invention can have a slotted recess 18 in the zone of perforate 12.Preferably, this framework comprises a this recess 18 on each side of the two opposite sides of this framework 4, that is, this frame height can reduce the twice of each slotted recess 18 degree of depth in this zone.More preferably, racket of the present invention comprises four this slotted recess 18, that is, each perforate 12 on both sides has two slotted recess 18.Preferably, this perforate 12 and arbitrarily corresponding this (a bit) recess 18 are arranged between two of this racket and four and at eight in the zone of Zhong Yushi between o'clock.Particularly preferably, on this framework 4, locate to be provided with a perforate 12 and locate to be provided with another perforate 12 at about nine o'clock in about three.In the latter's situation, the slotted recess 18 that all is provided at three and nine o'clock two place at the front side and the rear side of this racket preferably.

Preferably, during the step of this slotted recess molded this racket frame in a moulding press, for example, be molded in this frame profiles by the projection that a correspondence is provided in mould.In addition, preferably, can in the zone of this perforate 12, provide one or more layers strengthening layer (with whether existing a recess 18 to have nothing to do) in the material that forms this frame profiles.In order to reach this purpose, for example, a kind of carbon fibre material, the braided material made by glass or aromatic polyamides and/or unidirectional preimpregnation thing are with vertically being attached in the frame profiles that forms racket frame with ± 45 ° (that is spirality in the wall of this frame profiles) with respect to frame profiles.The optimal way of finishing this step is: frame material by piling up different layers and strengthening material and then these materials that pile up of roll-in and should " pipe " can be placed on subsequently in this moulding press and under the situation of being heated with pressurized, suppress this framework of formation forming one " pipe ".

By can see the another kind of mode that this perforate 12 is provided among the embodiment shown in Fig. 2 b and Fig. 2 c in the framework 4 of racket 2 of the present invention, promptly provide independently hole 12a by both sides, front and back at this framework, but not a through hole that passes this frame profiles.Fig. 2 b and Fig. 2 c all only show a this hole 12a, and the hole of the correspondence in the opposite side of this framework is then not shown comes out.Two relative hole 12a form a perforate that extends through this frame profiles together.

Shown in Fig. 2 b and Fig. 2 c is that these holes 12a is roughly arc or flute profile when when a direction that is parallel to the stringing plane is seen.Can utilize the hole as milling or sawing form.In the embodiment of Fig. 2 c, these holes 12a along the length L of framework preferably between 1mm and 10mm, more preferably between 3mm and 7mm.The depth capacity of a hole 12a is corresponding to the minimum wall thickness (MINI W.) of frame profiles, thereby this frame profiles shifts out at least in part fully so that a perforate is exposed in the inside of this frame profiles.The actual depth capacity of this hole 12a is preferably one and arrives the degree of depth of groove 20 (Fig. 3 c) that is used to hold the headband of this racket.The width B of this hole 12a is preferably between 3mm and 7mm.Though it is also not shown in Fig. 2 b and Fig. 2 c, but also be preferably perforate (preferably being roughly tubulose) insert or the lid that provide in these embodiments, and the shape of this insert or lid can be suitable for the shape of this hole or groove, so dirt and aqueous vapor all can't be carried out the inside of this frame profiles.

Fig. 2 d and Fig. 3 c illustrate and are similar to another embodiment embodiment, racket of the present invention shown in Fig. 2 b and Fig. 2 c.According to this embodiment, the relative hole 12a that forms perforate together has when the cross section that is roughly rectangle when the direction that is parallel to the stringing plane is seen.

Certainly, except embodiment shown in the drawings, can also provide a plurality of perforates 12 that are approximately perpendicular to the stringing plane of this racket along this framework.For example, a plurality of perforates can be arranged in about three and/or nine o'clock place symmetrically, perhaps partly arrange towards this handle since three and/or nine o'clock, perhaps arrange towards the free end of this racket head since three and/or nine o'clock.

Racket of the present invention is for improving ball-handling property advantageous particularly.In addition, the vibration that square stance produced reaches this handle with comparing weakly in known racket.But meanwhile, the acceleration capacity that racket of the present invention can be sent to ball but is enhanced.The advantageous property of racket of the present invention may be because the outermost sidewall of frame profiles, promptly having apart from this stringing plane has the intensity of part of the frame profiles wall of ultimate range to weaken because of the perforate between two and four or at eight in the zone of Zhong Yushi between o'clock, thereby this frame profiles Resisting Bend Moment here is little more a lot of than the Resisting Bend Moment in not having the zone of perforate.Up to the present, the situation that this frame profiles intensity weakens all is regarded as can really not occurring, the fragmentation because of the stress that is produced when using this racket because this framework is bound to.But according to the present invention, these perforates not only can provide extraordinary ball-handling but also can guarantee to obtain simultaneously the necessary stability of this racket.

Owing to be arranged on this (a bit) perforate in this framework, particularly be furnished with symmetrically in the situation of two perforates at longitudinal axis with respect to this racket, so there be a kind of " contact " (control point) to be formed in the zone of this (a bit) perforate, therefore promptly this racket can be to have very much flexiblely, can have these particularly advantageous performances.

Claims

1. racket that is used for ball game, it comprises a framework (4), this framework has handle part (10) that a racket head (6) and is connected with this racket head and is formed by a frame profiles, wherein, this racket head (6) limits a stringing plane, and this frame profiles comprises and at least onely passes this frame profiles and be approximately perpendicular to the stringing plane of this racket (2) and the perforate (12) of extending.

2. racket as claimed in claim 1, wherein, this framework (4) comprises that a plurality of these stringing planes that are arranged in substantially are for each bar line of netting twine through hole by wherein.

3. racket as claimed in claim 1 or 2, wherein, at least two perforates (12) roughly are provided with symmetrically with respect to the longitudinal axis of this racket.

4. as each described racket in the claim 1 to 3, wherein, this at least one perforate (12) is set in place between two on this racket head (6) and four and/or in the zone between eight and ten o'clock.

5. as each described racket in the claim 1 to 4, wherein, this at least one perforate (12) is arranged on about three and/or the about nine o'clock place of this racket head (6).

6. as each described racket in the claim 1 to 5, wherein, this at least one perforate (12) forms a through hole.

7. racket as claimed in claim 6, wherein, this through hole is a cylindricality, the cylindricality of pref. cylindrical, ellipse or rectangle.

8. racket as claimed in claim 7, wherein, the diameter D of this through hole is between 2mm and 8mm, preferably between 3mm and 6mm.

9. as each described racket in the claim 1 to 5, wherein, this at least one perforate (12) is formed by two the relative holes (12a) in this frame profiles.

10. racket as claimed in claim 9, wherein, when when the direction on this stringing plane is seen, described each hole (12a) is roughly flute profile.

11. as claim 9 or 10 described rackets, wherein, described each hole (12a) along the length of this frame profiles between 1mm and 10mm, preferably between 3mm and 7mm.

12. as each described racket in the claim 9 to 11, wherein, described each hole (12a) has corresponding to the wall thickness of this frame profiles at least and extends to a degree of depth T who is used to hold the groove (20) of a headband at most.

13. as each described racket in the claim 1 to 12, wherein, this at least one perforate (12) comprises that one is roughly the insert (14) of tubulose, so that towards this frame profiles of enclose inside.

14. as each described racket in the claim 1 to 13, wherein, this frame profiles is included in one or more layers strengthening layer in this at least one perforate (12) zone on every side.

15. racket as claimed in claim 14, wherein, this strengthening layer comprises the braided material of being made by carbon fiber, glass or aromatic polyamides and/or unidirectional preimpregnation thing, and arranges with ± 45 with respect to the direction of this framework.

16. as each described racket in the claim 1 to 15, wherein, in the zone of this perforate (12), at least one slotted recess (18) is formed in this frame profiles.

17. racket as claimed in claim 16 wherein, locates to form two relative slotted recess (18) in each perforate (12).

18. one kind is used to make a kind of racket, particularly makes the method as the described racket of claim 1 to 17, it may further comprise the steps:

(a) form a framework (4), this framework is made of and comprises the handle part (10) that a racket head (6) and is connected with this racket head a frame profiles; And

(b) provide at least one perforate (12), this perforate passes this frame profiles, be approximately perpendicular to a stringing plane that is formed by this racket head (6) and extend.

19. method as claimed in claim 18, wherein, at least two perforates (12) roughly are provided with symmetrically with respect to the longitudinal axis of this racket (2).

20. as claim 18 or 19 described methods, wherein, this at least one perforate (12) forms by boring in this frame profiles, milling or sawing.

21. as each described method in the claim 18 to 20, wherein, an insert (14) that is roughly tubulose inserts in this at least one perforate (12), so that seal this frame profiles towards inside.

22., wherein, when this frame profiles forms, one or more layers strengthening layer is arranged in this at least one perforate zone on every side as each described method in the claim 18 to 21.